Macbeth X-Series Dual EG/VCA

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"Two great full ADSR envelopes with the absolutely sweetest sounding integrated VCA. In full disclosure, I owned this module for about one week before I accidentally plugged it in incorrectly which partially impacted one of the envelopes and one of the knobs. The module was professionally repaired, recalibrated and tested and is now back like new. Physically, it's mint! Initially I wasn't sure how long it would take to get it repaired so I bought a second one (and had a custom modification added) so I no longer need the original. The repaired module functions just as it did when I first got it, so this is a chance to get one of these for a fraction of the price! MSRP for this module is $699.

Manufacturer's production description:

Crucial to the filtering and final output of any synthesizer are the envelope generators. There are various types of EGs in different designs and some are simple- some more complex. The X-series Dual EG employs a classic ADSR design. Using totally discrete parts- the switch on timing for this module can be very fast. The X-series Dual EG was designed to have three different ranges of operation- fast (which is well snappy), medium which is standard for most analogue synthesizers and slow which is great for long drawn out rise and fall times- perfect for slow evolving ambient music.

As the name suggests, this is a dual envelope generator. Typically one would use the first EG to control the cutoff frequency of a voltage controlled filter and the second EG to control the output, or volume of a voltage controlled amplifier. It was thought important to add a built in ‘utility’ VCA for that final output. The VCA, like most of the circuitry in this module, is a discrete transistor based design that adds that extra clarity to the final output.

Listing includes module, bus power connector and screws."